Coupling



V. OLDBERG April 3, 1934.

COUPLING Original Filed April 10, 1933 Patented Apr. 3, 1934 UNITED sTA COUPLING Virgil Oldberg, Detroit, Mich, assignor to Oldberg Manufacturing Company, Detroit, Mich a corporation of Michigan Original application April 10, 1933, Serial No.

665,366, now Patent No. 1,938,974, dated December 12, 1933.

Divided and this application November 13, 1933, Serial No. 697,769

2 Claims. (01. 285-183) This invention relates to pipe couplings.

In our prior application Serial No. 665,366, filed April 10, 1933, now Patent No. 1,938,974 of December 12, 1933 of which this application is a division, there are disclosed two different forms of couplings between a mufiier connection and a pipe in the exhaust line, each of which couplings includes one or more split bushings. The claims of the foregoing application are not drawn to cover the coupling which includes the split bushings of Figs. 1-3 of that application specifically, and it is intended to cover in the present application couplings employing bushings like those of Figs. 1 to 3 of that application.

The principal object of the present invention is to provide means forming a sealing connection be'twe enthe nested ends of pipesof dissimilar Other objects of the invention will be observedupon reference to the following detailed description of an embodiment, shown in the appended drawing. In this drawing Fig. 1 shows a muffler connection and a pipe, anda plurality of bushings arranged to form a sealing connection between them, the parts being shown in elevation and about to be telescoped;

Fig. 2 shows a single bushing.

Referring to the drawing, it will be seer that there is disclosed a muflier whose conn action 1 11 is to receive therewithin a pipe 12 The connection may be on the inlet or the outlet end of the mufller, and the pipe 12 may be the exhaust pipe or the tail pipe.

The connection 11 is split as indicated at 14, so as to be contractible.v V 1 Disposed between the connection 11 and the pipe 12 is a nest of sheet metal bushings including in the form shown, three relatively telescoped bushings 15, 15a, and 15b. These actually are identical in dimension and construction but are separately referenced for purposes of convenience.

Each of the bushings is generally cylindrical in form, and includes two or more sections, separated by longitudinal splits 16. One longitudinal edge of the fiat blank from which a bushing section is made is formed to provide two notches 18 separated by a tongue 20. The other longitudinal edge of the blank from which the same section of the bushing is made is formed to provide two tongues 21, separated by a notch 23.

The tongues and the notches are longitudinally and circumferentially dimensioned so that each notch will receive a tongue, with a. relatively close fit, especially along the circumferential edges of the tongues and notches.

It is also observed that the notches and tongues are of the same circumterential length, so that when a bushing is contracted to form a complete cylinder of the smallest diameter (Fig. 2) the split lines 16 thereof will be completely closed.

Further, each section of the bushing is formed with 9. lug 25. r

The bushings are utilized as follows: Before the end of the pipe 12 is inserted into the con-' nection 11, a split clamping collar 26 of conventional construction and having wings 27 adapted to be connected by a contracting bolt 28 is thrust over the connection '11.

Then one or more bushings, as the mechanic who is doing the assembly thinks will be necesbushing; when a plurality of bushings is used,

bushings between 1118s, was to limit axial move- The gaps between the I ment of the bushings. edges of the splits in the outer bushings of the nests will be greater than the gaps between the edges of the splits in the inner bushings of the nest, since the bushings are identically dimensioned, and it might possibly be that the inner bushing of the nest will have no gap whatever at the split, the gap being completely closed as above described.

The mechanic then inserts the pipe end 12 into the nest of bushings and the assembly is then in It will also be observed that the bushing sections, when contracted, .are'flexed much less than is the case where the bushings are each made of one piece; and can be made much more cheaply than one piece bushings of similar form.

Now having described an embodiment of the invention, reference will be had to the following claims for a determination of the scope of the invention.

I claim: I

1. Means forming a sealing connection between nested ends of pipes of dissimilar diameter and taking up all of the circumferential space between the nested ends comprising a nest of adapter or take-up bushings of thin and resilient sheet metal disposed in and taking up all of the circumferential space between the nested ends. each of said bushings comprising a plurality of complementary arcuate sections each of whose longitudinal edges is formed to cooperate with a complementary edge of an adjacent section and provide three or more interfltting tongue and notch interlocks.

2. Means forming a sealing connection between nested ends of pipes of dissimilar diameter and taking up all of the circumferential space between the nested ends comprising a. nest of adapter or take-up bushings of thin and'resilient sheet metal disposed in and taking up all of the circumferential space between the nested ends,

each of said bushings comprising a plurality o f/ 5 complementary identical arcuate sections each of whose longitudinal edges is formed to cooperate with a complementary edge of an adjacent section and provide three or more inter-fitting tongue and notch interlocks, each section having one longitudinal edge provided with two notches and one tongue, and the other provided with two tongues and one notch.

VIRGIL OLDBERG. 

